Question

The mean of six numbers is 14. If one of the six numbers is removed, the mean becomes 5. What is the value of the number removed?

Answer 1

Answer:

59

Step-by-step explanation:

Suppose a, b, c, d, e and f represent the 6 numbers.  

Then, $\frac{a + b + c + d + e + f}{6} = 14$

(1)         a + b + c + d + e + f = 84

Let's remove f

then $\frac{a + b + c + d + e}{5} = 5$

(2)        a + b + c + d +e = 25

Substitute 25 in for  a + b + c + d +e in equation (1)

We have 25 + f = 84

                       f  = 59

Answer 2

Answer:

Remember, the mean is calculated by adding the scores together and then dividing by the number of scores you added. In this case, the mean would be 2 + 4 (add the two middle numbers), which equals 6. Then, you take 6 and divide it by 2 (the total number of scores you added together), which equals 3.

Step-by-step explanation:

Hope I helped.It's just a reminder of helpful things for means!